for TF2, add "-nojoy" as option (I'm guessing that you have a mouse (considered by TF2 as joystick) attached to your notebook. This issue is fixed internally and will be released in the next update). for Serious Sam 3, disable frequency scaling on your processor when playing. Serious Sam 3 is still slow, but it's still pretty early to say that this is how the game will end up when finally released. Everything needs work, which is why this is still a beta. They will be fixed in the final release though.